Where does “โปรตุเกส” come from?
โปรตุเกส (Thai) comes from Portuguese português, from Old Portuguese portugaes, from Late Latin portucalensis, from Latin Portucale, from Latin Portus Cale, from Latin Portus, from Proto-Italic portus, from Proto-Indo-European pértus — passed , crossed.
Ancestry of “โปรตุเกส”, step by step